Cutter adjustment



A. BATES 5? AL.

CUTTER ADJUSTMENT Mag, 4, 1926. 1,582,959

Filed Feb. 2. 1921 Patented May 4, 1926.

UNITED STATES PATENT OFFICE.

ARTHUR BATES, FRED RICKS, AND ALBERT AMOS ASTON, OF LEICESTER, ENGLAND,

ASSIGNORS TO UNITED SHOE IVIACHINERY CORPORATION, OF PATERSON, NEW JER-SEY, A CORPORATION OF NEW JERSEY.

CUTTER ADJUSTMENT.

Application filed February 2, 1921. Serial No. 441,849.

To all whom it may concern.

Be it known that we, ARTHUR Barns, FRED Ricks, and ALBERT A. ASTON,subjects of the King of England, and residents of Leicester,Leicestershire, England, have invented certain Improvements in CutterAdjustments, of which the following description, in connection with theaccompanying drawings, is a specification, like reference char acters onthe drawings indicatin like parts in the several figures.

This invention relates to fastening insert-ing machines and to thesevering of fastenings from strips of material supplied thereto. Moreparticuarly the invention r lates to machines for inserting metallicfastenings such as are used in the manufacture of boots and shoes and tothe adjustment of cutters commonly used in certain of such machines forsevering from strips of ma terial metallic fastenings to be inserted inshoes. I

The invention is described in the accompanying specification withreference to the adjustment of the cutters of a type of fasteninginserting machine commonly known as the taper nail tacking machine inwhich a strip of sheet metal of a width equal substantially to thelength of the fastenings to be inserted is fed to cutters with w" themachine is provided, so that fastcnii gs to be driven by the machine maybe cut from the strip. A machine of this pc is illustrated and describedin United States Letters Patent No. 490,625, granted Jan. 4-, 1893, onan application filed in the name of Louis Goddu to which reference maybe had for a fuller description thereof.

The cutters of machines of this type are coi'nmonly held in a pairof'relatively movable cutter holders. In the illustrated machine, as inthat of the disclosure of the patent referred to, one of these cutterholders is stationary and the other is movable to bring the two cuttersinto cutting relation, the strip of fastening material being fed forwardstep by step to provide the material of which the fastenings are forieil.

It is needful from time to time to remove the cutters from the machinefor the purpose of grinding them as they become worn or their cuttingedges otherwise damaged. It is necessary when replacing the cutters toposition them in their holders with a verv considerable degree ofaccuracy, otherwise the machine will fail to cut fastenings having thedesired smoothness and uniform shape. If the cutters are improperly ad--justed, the fastenings may have burrs and ragged portions, appearing asif torn instead of smoothly cut from the strip.

Heretofore the replacement and adjustment of the cutters in suchmachines have called for a series of operations requiring carefulattention and skill and consuming a substantial amount of time. Thus inreplacing the cutters of machines of the type set forth in said LettersPatent, it is necessary to place the main shaft of the machine in adefinite position in which a cam operating a cutter controlling leverhas advanced the lever to its limit of cut ting movement; to remove thefastening driver from its clamp in the driver bar; (3) to thread thedriver through a horizontal passage in the nail guiding throat; t) tomove the fixed cutter forwardly in s holder until its vertical edgecontacts with the driver thus threaded in the path of the cutter in itsholder and then to clamp the cutter in its holder, its vertical edgethen Jeing in a position substantially to the right, viewing the machinefrom the operatives position, of the path of the driver when inoperation (5) to reinsert the driver in its clamping and driving bar;and (6) to move the movable cutter forward in its holder until itsvertical edge contacts with the driver and then clamp it in lLS holder.

It is an object of the preterit invention to simplify the procedure ofinserting and adjusting cutters such as those of machines of the typeabove referred to so as to reduce the necessity for still in itsperformance and so as to reduce the time consumed.

A feature of the invention consists in the provision of means forbringing the cutter holders into the relative position which they should'occupy'at the conclusion of each cutting operation without turning overthe machine as a whole, and this quickly and positively andentirelyindependent of the position in which the'diiferent parts of the machinemay have stopped.

A further feature of the invention consists in the provision of a stoparranged to indicate the position which the cutting edge of a cuttershould normallybccupy at the conclusion of each cutting operation. Inthe illustrated machine, a pair of stops in the form of shoulders areprovided, one arranged to contact with the cutting edge of each cutterwhen the cutters are properly adjusted in the cutter holders and thecutter holders are in the relative position they occupy at theconclusion of each cutting operation, so that by bringing the cutting orges of the cutters against these stops while the cutter holders are inthe position they occupy at the conclusion of each cutting operation andthen clamping the cutters in the holders they may be readily andaccurately replaced without the necessity of the comparatively lengthyprocedure outlined above.

Machines of this character are often provided with at least one cutterholder which is rocked about an axis at right angles; to the plane ofthe cutting movement. In assembling these machines,'either originally orafter they have been dismantled, it is necessary that the plane ofmovement of the cutter held in this movable cutter holder be accuratelyadjusted with respect to the position of the other cutter. This hasordinarily been done in the past by packing or shimming up the cutter inits holder with strips of paper or other sheet material, or by a more orless laborious filing of the different parts to bring the cutters intoproper relation.

It is a further object of the present invention to provide means forpositively adjus ing one of the cutters of such machines so as to bringthe plane of cutting movement of that cutter into proper relation to thecutting edge: of the other cutter. In the 'llustrated machine this isaccomplished by forming the pivot or journal of the movable cutterholder in two parts relatively adjustable axially or lengthwise of thepivot so that the plane of the cutter holder may be adjusted lengthwiseof its pivot and so that the cutter holder may be locked in its adjustedposition.

W ith the above andother objects in view, the invention will now bedescribed in connection with the accompanying drawings, which show anillustrative embodiment thereof, and pointed out in the claims. Itshould be understood, however, that this disclosure is primarily for thepurpose of illustration and that the invention is in no way limited tothe form of machine shown but may be embodied in machines of other typeswithin the scope of the subjoined claims.

In the drawings,

Fig. 1 illustrates a front View of the cut ters and cutter operatingmeans and associated parts of a fastening inserting machine;

Fig. 2 is a cross'section on line 2-2 of Fig. 1;

Fig. 3 is a side View, partly in section, showing an adjustable pivot orjournal for the movable cutter holder of the machine of Fig. 1;

Fig. 4 is a rear elevation on a larger scale than Fig. 1 of the throatpiece of the machine;

Fig. 5 is a cross section on the line 55 of Fig. 4, showing also therelation of the cutters to the throat piece and to the cutter adjustingstops ofthe machine;

Figs. 6 and 7 are an elevation and bottom view respectively of a stopbearing bushing inserted in the throat piece of the machine tofacilitate the adjusting of the movable cutter.

The illustrated machine is provided with a main drive shaft 10 journaledin suitable bearings and carrying a cutter operating cam 12 providedwith a rise 14. Engaging the cam 12 and normally held in contacttherewith by a compression spring 16 is a roll 18 mounted near one endof a movable cutter carrying lever 20, this-lever being pivoted to theframe 22. of the 111achine, as will be more fully hereinafter described,at 24. Carried by the lever 20 and removably attached thereto as byscrews 28 is a movable cutter holder 28 in which is carried the movablecutter 3Q. Clamped to a fixed portion of the frame of the machine, as bya screw 82, is the fixed cutter holder 34 by which is carried the fixedcutter 36. Cutter has its cutting edge radial of the path of movement oflever 20 and cutter holder 28, so that the two cutters act as shears insevering fastenings from a strip or ribbon of fastening material. Athroat piece 38 provided with a nozzle 40 and formed with a fasteningreceiving and directing opening 42 is removably attached to the fixedcutter holder as by screws 44.

The machine is provided with a driver bar 46 to which is clamped in anyappropriate manner a driver 48 arranged for re ciprocation through theopening in the throat piece and nozzle in timed relation to theoperation of the cutters to insert in the work fasteners severed by thecutters from a strip of fastening material appropriately fed thereto.

A set screw 5-0 may be provided, threaded into an appropriate rigid partof the frame of the machine and adjustable to engage the rear end of thefixed cutter to assist in maintaining it in adjusted position.

The portions of the machine so far described may be substantially inaccordance with the showing of United States Letters Patent No. 490,625,above referred to, and to which reference may be had for a disclosure ofappropriate mechanism for operating the moving parts thereof.

To facilitate the adjustment of the cutters of the machine, a-cam lever52, provided with a. cam portion 54 and a handle 56, is pivoted at 58 toa rigid part of the frame of the machine, the cam portion of the leverbeing so formed that when the lever is swung in a counter clockwisedirection from the position which it occupies in Fig. 1 it will movelever to the position which it occupies at the conclusion of eachcutting operation, and this irrespective of the position of cam 12. Inother words, cam 54 is of such a form that it moves lever 20 to the sameposition to which it is moved by the highest portion of the rise 14 ofcam 12. Lever 20 may eonveniently be provided with a roll to cooperatewith the cam portion 54 of lever 52.

Lever 20 is provided with a stop secured thereto in any suitable mannerand illustrated as a shoulder 62 so located that, when lever 20 is movedto cutter adjusting position under the influence of lever 52, shoulder62 will be in such position that engagement cutter holder, is providedwith a stop which,

when engaged by the cutting edgeof the movable cutter, with the lever 20in the position which it occupies at the conclusion of each cuttingmovement and to which it may readily be moved by lever 52, ensuresthe.correct positioning of the movable cutter. As illustrated this stopconsists of a surface formed as a shoulder 64 of a bushing 66 seated inan enlarged opening 68 in the upper portion of the throat piece andprovided with a central opening 70 in alinement w th the opening 42 ofthe throat and nozzle. Conveniently this bushing may also be providedwith a surface 7 2 for engagement with the fixed knife to ensure itscorrect position circumferentially of the throat opening. As shown,these surfaces are formed by removing a portion of the periphery of thebushing at the lower end thereof.

For the purpose of adjusting the movable cutter along its axis ofrotation, the pivot or journal 24 of the lever 20 is formed in tworelatively longitudinally adjustable parts 80 and 82 having threadedconnection at 84 for purposes of adjustment and provided with lock nuts86 by which they may be positively retained in adjusted relation. Thepivot or journal 24 may conveniently be of conical form and is shown asprovided with a threaded portion 88 for engagement with nuts 90 forholding it in the desired relation to its bearing in the frame of themachine.

To bring the plane of the cutting arm of the movable cutter into correctrelation with thecutting edge of the movable cutter into correctrelation with the cutting edge of the fixed cutter when assembling themachine, it is necessary only to adjust the nuts 90 so as to bring andhold the portion 80 of the pivot in proper position in its bearing andthen to adjust the portion 82 of the pivot to bring the movable.cutterinto the correct plane, locking it in that position by means ofnuts 86.

In replacing the cutters after their removal for grinding or for otherpurposes, it is only necessary to raise the lever 52 so as to throwlever 20 into the position which it occupies at the conclusion of eachcutting operation, then to position the fixed cutter 36 with its cuttingedge against shoulder 62 and the movable cutter 30 with its cutting Vedge against shoulder 64 carried by the bushing of the throat member,clamping them in these positions by means of screws 32 and 26, thenbringing screw 50 into position to bear against the rear end of thefixed cutter. The cutters are then in correct operative relation and themachine may be started forthwith.

Having described our invention, what we claim as new and desire tosecureby Letters Patent of the United States is 1. A machine for insertingmetallic fastenings having, in combination, a pair of cutters forsevering fastenings from a strip of fastenin maternal, and a stopsupported. rigidly wit1 respect to one of the cutters and arranged toengage the cutting edge of the other cutter when that cutter is in theposition it should occupy at theconclusion of each cutting operation.

2. A machine for inserting metallic fastenings having, 'in combination,a pair of cutters for severing fastenings from a strip of fasteningmaterial, a driver arranged to insert the severed fastenings, and a stoprigidly supported with respect to each cutter arranged to engage theother cutter when that cutter is in the position it should occupy at theconclusion of each cutting operation.

3. A machine for inserting metallic fastenings having, in combination, apair of cutters, a pair of cutter holders arranged to hold said cutters,and a stop carried by one of said cutter holders in position to engagethe cutter carried by the other cutter holder when that cutter is in theposition it should occupy at'the conclusion of each cutting operation.

4. A machine for inserting metallic fastenings having, in combination, apair of cutters, a pair of cutter holders arranged to hold said cutters,and a throat piece carried by one of said cutter holders and providedwith a bushing having a portion of its periphery removed to form a stopin position to engage the cutter carried by the other cutter holder whenthat cutter is in the position it should occupy at the conclusion ofeach cutting operation.

A machine for inserting metallic fastenings having, in combination,throat piece, a driver movable through the opening therein, a cutter,and a bushing having an opening in alinement with the opening of thethroat piece and provided with a surface into contact with whichthecutter may be brought for adjustment thereof.

(l. A machine for inserting metallic fas tenings having, in combination,a cutter for severing a fastening from a strip of fastenii'ig material,a driver for inserting the fastening in th work, and a stop positionedto engage the cutter to indicate the position it should occupy at theconclusion of each cutting operation.

7. A machine for inserting metallic fastcnings having, in combination, apair of relatively movable cutter holders and a cut ter adustablymounted in each cutter holder, each cutter holder being prov d with astop stationary with respect thereto, each stop being arranged to beengaged by the cutter carried by the other cutter holder correctly toposition the cutters.

8. A machine for inserting metallic fastenings having, in combination, apair of relatively movable cutter holders, a cutter adjustably clampedto each cuter holder, each cutter holder being provided with a shoulderstationary with respect thereto, and each shoulder being arranged at theend of the path of relative movement of the cutter carried by the othercutter holder to facililate the adjusting of the cutters.

9. A throat piece for machines for insertmetallic fi istenings having adriver receiving bushing stationary relatively thereto and partially cutaway so as to provide a shoulder adjacent to the driver receivingopenings of the throat and of the bushing.

10. A machine of the class described having a throat member, a cutter,and a bushing for the throat member having a portion of the peripherythereof removed to provide an engaging surface for said cutter.

11. A bushing for the throat of a metallic fastening inserting machinehaving a portion of the periphery thereof removed to provide a pair ofplane surfaces arranged at an angle to one another for engagement withthe cutters of the machine.

12. A machine for inserting metallic fastenings having, in combination,a movable cutter holder, a cutter therein, means for moving said cutterholder in a path of which the cutting edge of the cutter is a radius toshear a fastening from a strip of fastening forming material, and meansseparate from said cutter moving means and operable independentlythereof to move said cutter holder into the position which it shouldnormally occupy at the conclusion of each cutting operation.

13. A machine for inserting metallic fastenings having, in combination,a. lever, a cutter holder carried thereby, a cutter adjustably carriedby the cutter holder, a cam for rocking said lever to shear a fasteningfrom a strip of fastening forming material, the shearing edge of thecutter being radial of the path of rocking movement of the lever and thecutter holder and means separate from said cam and operable independentof the position thereof to move said lever and the cutter holder carriedthereby into the position which they should normally occupy at theconclusion of each cutting operation.

i i. A machine for inserting metallic fasleiiings having, incombination, a lever, a cutter holder carried thereby, a cutteradjustably carried by said cutter holder, means for rocking said leverto cause said cutter to cut a fastening from a Strip of fasteningforming material, and a cam member operable to move said lever and thecutter holder carried thereby into the position which they norma lyoccupy at the conclusion of each cutting operation independently of thecondition of said lever rocking means.

15. A machine for inserting metallic fastenings having, in combination,a lever, a cutter holder carried thereby, a cutter adjustably mounted insaid cutter holder, a cam for rocl ing said lever to cause said cutterto cut a fastening from a strip of fastening forming material, and a camseparate from said first-named cam and operable to move said lever andthe cutter holder carried thereby into the position which they shouldnormally occupy at the conclusion of each cutting operationindependently of the posi tion of said first-named cam.

16. A machine for inserting metallic fastenings having, in combination,a stationary cutter, a lever, a movable cutter holder carried thereby, acutter adjustably carried by said cutter holder, means for rocking saidlever to cause said cutters to cut a fastening from a strip of fasteningforn ing material, and a cam member arranged to move said lever and saidmovable cutter into the position which they should normally occupy atthe conclusion of each cutting operation independently of theconditionof said lever rocking means.

17. A. machine for inser ing metallic fast-enings having, incombination, a lever, a cutter holder carried thereby, a cutteradjustably clamped in said cutter holder, a cam for rocking said leverto cause said cutter to cut a fastening from a strip of fasteningforming material, and a cam operable to move said lever and the cutterholder carried thereby into the position Which they should normallyoccupy at the conclusion of each cutting operation independently of theposition of said first named cam.

18. A metallic fastening inserting machine having, in combination, adriver, a cam, a cutter arranged to sever fastenings from a strip offastening forming material and present them in position to be insertedby said driver, a cutter actuating lever operated by said cam, a springtending to hold the lever to the cam, and a setting de ice operable tohold the lever away from the cam in a position appropriate for cutteradjusting.

19. A metallic fastening inserting machine having, in combination, adriver, a cam, a cutter arranged to sever fastenings from a strip offastening forming material and present them in position to be insertedby said driver, a cutter actuating lever operated by said cam, a springtending to hold the lever to the cam, and a setting device for holdingthe lever away from the cam against the tension of said spring in theposition it should normally occupy at the conclusion of each cuttingoperation.

20. A machine for inserting metallic fastenings having, in combination,a cutter carrier, a cutter carried thereby, a conical pivot memberadjustably connected to said cutter carrier, abearing therefor, andmeans for locking said cutter carrier in adjusted relation to saidconical pivot member adjustable to compensate for imperfections in theconical pivot member or its bearing.

21. In a machine for inserting metallic fastenings, a cutter carrier, aconical pivot member, and means for locking the cutter carrier inadjusted position axially of said pivot member. j

22. In a machine of the class described, a lever, a conical journaladjustably connected to said lever, conical bearing for said journal,and means for locking the lever in adjustedpo-sition lengthwise of saidjournal.

23. In a machine for inserting metallic fastenings, a cutter carrier, acutter rigidly carried thereby, a pivot for the cutter carrier, andmeans for holding the cutter car rier in adjusted position axially ofsaid pivot.

2a. A machine for inserting metallic fastenings having, in combination,a cutter carrier, a cutter carried thereby, and a conical, pivot memberadjustably locked to said outter carrier, and constituting a supporttherefor.

25. A machine for inserting metallic fastenings having, in combination,a fixed cutter holder and a movable cutter holder, a cutter carried byeach holder, means for moving said movable holder back and forth tocause the cutter carried thereby to cut fastenings from a strip offastening forming material, and means separate from said first-namedmeans for moving said movable cutterholder into the position which itshould normally occupy at the conclusion of each cutting op erationindependently of the condition of said first-named means.

26. A metallic fastening inserting machine having, in combination, adriver, a movable cutter holder, a cutter carried thereby, means formoving said cutter holder to cause said cutter to cut fastenings from astrip of fastening forming material and present them in posit-ion to beinserted by said driver, and means for positioning said outter holder inthe position which it should normally occupy at the conclusion of eachcutting operation independently of the position of the driver.

27. A machine for inserting metallic fastenings having, in combination,a fixed cutter holder and a movable cutter holder, a cutter carried byeach holder, a cam for moving said movable holder back and forth tocause the cutter carried thereby to cut fastenings from a strip offastening forming material, and a manually shiftable cam, separate fromsaid first-named cam, for moving said movable cutter holder into theposition which .it should normally occupy at the conclusion of eachcutting operation independently of the position of said firstnamed cam.

28. A metallic fastening inserting machine having, in combination, adriver, a movable cutter holder, a cutter ca ried thereby, a cam formoving said cutter holder to cause said cutter to cut fastenings from astrip of fastening forming material and present them in position to beinserted by said driver, and amanually operable cam for positioning saidcutter holder in the position Which it should normally occupy at theconclusion of each cutting operation in dependently of the position ofthe driver.

29. A machine for inserting metallic fastenings havin in combination, acutter holder, a cutter carried thereby, means for moving said cutterholder back and forth to cause said cutter to cut fastenings from astrip of fastening forming material, means independent of saidfirst-named means for moving said cutter holder into the position whichit normally occupies at the conclusion of each cutting operation, aconical pivot member adjustably connected to said cutter holder, andmeans for locking said pivot member to said cutter holder adjustable tocompensate for imperfections in the pivot member or its bearing.

30. A machine for inserting metallic fastenings having, in combination,a cutter holder, acutter carried thereby, a cam for moving said cutterholder back and forth to cause said cutter to cut fastenings from astrip of fastening forming material means independent of saidfirst-named means for moving said cutter holder into the position whichit should normally occupy at the conclusion of each cutting operation, apivot member adjustably connected to said cutter holder, and means forlocking said pivot member to said cutter holder adjustable axially ofsaid pivot member to compensate for imperfections in the pivot "memberor its hearing. 7

In testimony whereof We have signed our names to this specification.

ARTHUR BATES. FRED HICKS. ALBERT AMOS ASTON.

Certificate of Correction. Patent No. 1,582,959. i Granted-May 4, 1926,to

. ARTHUR BATES ET AL. It is hereby certified that error appears in theprinted specification of the above-* numbered patent requiringcorrectionas follows: Page 3, lines 71 and. 72, strike out the Words ofthe movable cutter into correct relation with the cutting edge and fthat the said Letters Patent should be read with this correction thereinthat the same may conform to the record of the case in the PatentOflice.

Signed and sealed this 11th day of October 1927.

[SEAL] M. J. MOORE Acting Commissioner 0} Patents.

